/**
 * Content reading utilities for markdown sources.
 *
 * Provides file reading with helpful error messages.
 */
/**
 * Read a file's content.
 *
 * @param filePath - Path to the file
 * @returns File content as string
 * @throws Error with helpful message including the file path
 */
export declare function readFile(filePath: string): string;
/**
 * Check if a file exists.
 */
export declare function fileExists(filePath: string): boolean;
/**
 * Read JSON file.
 *
 * @param filePath - Path to JSON file
 * @returns Parsed JSON or null if file doesn't exist
 * @throws Error with file path if JSON parsing fails
 */
export declare function readJsonFile<T>(filePath: string): T | null;
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